> how expensive is the plumber

well you don't call a plumber to unclog a sink, you'd call a "handyman" or someone like that. You call a plumber when you need a new feed off of a buried gas line. I think you have to factor in the expertise needed which will drive cost per unit time.

You are right; I have never called anyone to know who to call.. LOL. I have an allergy to finding people to do minor stuff which is work itself harder than the work that needs to be done. There are people in gig economy that do that stuff too.